(1952). The thirteen books of Euclid's elements. Encyclopaedia Britannica.
Cita Chicago (17th ed.)The Thirteen Books of Euclid's Elements. Chicago: Encyclopaedia Britannica, 1952.
Cita MLA (9th ed.)The Thirteen Books of Euclid's Elements. Encyclopaedia Britannica, 1952.
Atenció: Aquestes cites poden no estar 100% correctes.